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Victorian 0.85 Carat Opal and 1.68 Carat Diamond Trilogy Ring in 18ct Yellow Gold

A stunning, fine and impressive antique 0.85 carat opal and 1.68 carat diamond, 18 carat yellow gold trilogy ring; part of our diverse antique opal engagement rings collection

This stunning, fine and impressive antique Victorian ring has been crafted in 18ct yellow gold.

The scrolling setting displays a central claw set 0.85ct cabochon cut opal.

The opal is flanked with a 0.83ct and 0.81ct Old European cut diamonds, each claw set in a horizontal trilogy design.

The main setting is further embellished with six pavé set Old European cut diamonds, set in sequence with the main gemstones.

The elevated, scroll decorated ring shoulders integrate with the claw settings and blend seamlessly with the plain 18ct yellow gold ring shank.

This antique opal ring has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as 18 carat gold.

This impressive opal and diamond ring is supplied with two IDGL diamond grading report certificates for the feature stones, in addition to an IDGL diamond grading report card for the supporting stones.

Such antique trilogy rings set with large feature very high colour graded diamonds are rare to the market and becoming increasingly difficult to locate.

This opal trilogy ring, embellished with diamonds in yellow gold, is a meaningful present for birthdays, anniversaries, or romantic milestones. It embodies the past, present, and future, rendering it a splendid selection for an alternative engagement ring.

This antique trilogy ring is excellent quality, set with a stunning opal displaying a scintillating play of colour and presence.

The very high colour and clarity graded feature diamonds display a fine white colour, brilliance and presence; there is a minor loss to the girdle of one diamond.

The gemstone ring is an excellent gauge of gold and is in excellent condition.

Additional information

Opal Quality

Cut Cabochon
Content 0.85 carat

Diamond Quality

Feature Diamond One
Colour E
Clarity VS2
Cut Old European
Content 0.83 carat
Dimensions 5.98mm (length) x 5.96mm (width) x 3.74mm (depth)

Feature Diamond Two
Colour E
Clarity VS1
Cut Old European
Content 0.81 carat
Dimensions 5.94mm (length) x 5.90mm (width) x 3.81mm (depth)

Supporting Diamonds
Colour (average grades) K
Clarity (average grades) P2
Cut Old European
Content 0.04 carat

Total Diamond Content
1.68 carats

Number of Diamonds
8

Dimensions

Width of setting 7.97mm/0.31"
Height of setting 5.08mm/0.2"

Weight

4.49 grams

Gemstone

,

Ring Size

UK Size M – USA Size 6

Date

Circa 1890

Diamond Clarity:

VS2

Diamond Colour:

E

Can be Resized:

yes

FREE INTERNATIONAL SHIPPING
Dispatched via DHL (or equivalent) on the next working day.

Estimated Delivery:

  • UK: 2–3 working days
  • Worldwide: 5–7 working days

Fully Insured in Transit
Free insurance up to £30,000. AC Silver remains responsible until delivery is confirmed.

Returns & Cancellations
You have 14 days to cancel your order.

Returns must be sent to our UK address within 14 days of cancellation.

Customers are responsible for return postage. A refund will be processed after inspection of the returned item.

Altered or Personalised Items

  • Items resized or altered before dispatch: exchange or credit note only
  • Engraved silver: non-refundable

Full returns & cancellation policy

What our customers say

5.0 ★★★★★ ★★★★★ based on 201 reviews
★★★★★ ★★★★★

Lovely selection & excellent service

AC Silver has a stunning selection of antique and vintage items. Both of my brooches arrived right on time as indicated by the tracking. They are even lovelier in person and I look forward to wearing them for decades to come. Andrew and Gemma provided excellent communication and prompt dispatch. I would absolutely recommend working through them.
Christina 15 Jul 2026
★★★★★ ★★★★★

Fabulous service, beautiful product.

Fabulous service, beautiful product.
Imogen 24 Jun 2026
★★★★★ ★★★★★

Beautiful collection and outstanding service

Beautiful collection and outstanding service. I already bought two extraordinary pieces and can only highly recommend.
Christine 23 Jun 2026
★★★★★ ★★★★★

Excellent customer care.

I had to place the order over the phone as my internet was misbehaving. The lady who I spoke to could not have been more helpful and was particularly careful to get all the details correct. I was then informed about the collection and dispatch of the item purchased, by email. The item arrived as expected and it had been most well packed so that no harm could come to it. It was a delight to purchase this item from C6323, AC Silver, and I could not fault any aspect of their customer care. I was highly delighted with my silver mustard pot and it was much better than the pictures on the web site.
Hilary 20 May 2026
★★★★★ ★★★★★

Exceptional personal service

First class personal service and attention to detail along with an exceptional quality of items offered for sale. A very smooth purchasing experience with swift and safe despatch of high value objects via courier. Highly recommended.
Colin 28 Apr 2026
★★★★★ ★★★★★

A lovely experience

AC Silver's website is very detailed and informative - allows customers to make well good comparisons and subsequent choices. The owner and his staff are very helpful and friendly - dealing with them is a pleasure. They go the extra mile to make sure that customers are totally satisfied with their purchases. Would highly recommend this store.
Wendy 27 Feb 2026
★★★★★ ★★★★★

Excellent experience

Excellent experience buying a beautiful item from AC Silver. Enquiries were dealt with quickly and courteously, I felt very confident buying an expensive item online. It arrived quickly and safely, beautifully packaged. I am delighted with it and wouldn't hesitate to recommend AC Silver.
Susan 24 Jan 2026
★★★★★ ★★★★★

This was an all-around great experience. The pre-sale communication was excellent and informative. The team was extremely responsive. When the item arrived, it was exactly as described.

This was an all-around great experience. The pre-sale communication was excellent and informative. The team was extremely responsive. When the item arrived, it was exactly as described. I would recommend these guys to anyone.
26 Dec 2025

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